136253493 has 24 divisors (see below), whose sum is σ = 199811040. Its totient is φ = 89462880.

The previous prime is 136253477. The next prime is 136253519. The reversal of 136253493 is 394352631.

It is a happy number.

136253493 is a `hidden beast` number, since 1 + 36 + 2 + 534 + 93 = 666.

It is not a de Polignac number, because 136253493 - 2⁴ = 136253477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136253993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191823 + ... + 192531.

It is an arithmetic number, because the mean of its divisors is an integer number (8325460).

Almost surely, 2^136253493 is an apocalyptic number.

It is an amenable number.

136253493 is a deficient number, since it is larger than the sum of its proper divisors (63557547).

136253493 is a wasteful number, since it uses less digits than its factorization.

136253493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009 (or 1006 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 136253493 is about 11672.7671526507. The cubic root of 136253493 is about 514.5756305505.

The spelling of 136253493 in words is "one hundred thirty-six million, two hundred fifty-three thousand, four hundred ninety-three".